Unisys OS 2200 distributed processing
OS 2200 supports all commonly used, and many not so commonly used, distributed processing protocols, APIs, and development technology.

The X/Open Distributed Transaction Processing model and standards are the basis for much of the OS 2200 capability[1]. Full support for the X/Open XA APIs including two-phase commit are built into transaction middleware, the database managers, and even clustering.
The J2EE model[2] is also fully supported. It uses the XA capabilities of the system but provides the J2EE APIs and protocols.
IBM WebSphere MQ (AKA MQSeries)[3], MSMQ[4], and others are all fully integrated into the system taking advantage of the XA and integrated recovery facilities.
Distributed Transactions

Distributed Data Access

Access to OS 2200 data can be made from virtually any platform and technology.
Similarly, OS 2200 applications can access data on almost any other platform.
References
- ^ Unisys Corporation (2000). Open Distributed Transaction Processing Getting Started. (Unisys publication 7833 5007). Roseville, MN. http://public.support.unisys.com/2200/docs/cp12.0/pdf/78335007-007.pdf
- ^ Unisys Corporation (2009). J2EE™ Connector for OS 2200 Transactions User's Guide. (Unisys publication 7833 5007). Roseville, MN. http://public.support.unisys.com/2200/docs/cp12.0/chm/47291992-003/47291992-003.chm
- ^ Unisys Corporation (2009). MQSeries for ClearPath OS 2200 Installation, Administration, and Programming Guide. (Unisys publication 7861 5762). Roseville, MN. http://public.support.unisys.com/2200/docs/cp12.0/pdf/78615762-005.pdf
- ^ Unisys Corporation (2009). ClearPath OS 2200 Interface for Microsoft Message Queuing Help. (Unisys publication 7861 5762). Roseville, MN. http://public.support.unisys.com/2200/docs/cp12.0/chm/68852722-002/2200msmqi.chm